http://www.kde-forum.org/artikel/24238/layers-desktop-virtual-desktops.html?s=0 f6404f5dafa6556869bc9a04bdfe78b196a4133
Note: UnixPro3 = Trinix (Some guy took the name Trinix on their forums???)
Note2: This could be applicable to Gnome 3, I'd bet they would make minimalistic modules but at least it would provide a very easy way for others to step in and create modules to expand upon it.
• There should be 6 discrete/well-defined layers to the Gnome desktop.
= = Description of the 6 layers:
1.) Screen. This is the layer at which a wallpaper, movie, screensaver can be selected for the background "Desktop."
2.) Desktop. This layer contains the icons layout for the desktop.
3.) Deskies. Desktop widgets. Widgets that you can see/use without bringing up a hidden layer.
4.) Panels. This is for the menubar/panels/docks.
5.) WorkSpace(s). This is where the applications windows go and handles virtual desktops.
6.) Dashboard. A hidden layer which becomes visible by key command. Same as Deskies only hidden.
= = Layer Order (From bottommost to topmost, what's on top of what...)
1.) Screen
2.) Desktop
3.) Deskies
4.) WorkSpace(s)
5.) Panels
6.) Dashboard
= = Startup Order/Priority
[....]